Well, maybe juice hot peppers and use that instead of gasoline. You wouldn't even need to ignite it to get "fire" out of it. Good for self defense, annoying neighbors or taco salad. Don't forget to use vinegar instead of water, use the hottest peppers possible, boil the juice for maximum potency and strain the pulp out well so the juice isn't so thick it jams the extinguisher. Repeat the process until you have enough to fill the extinguisher 1/2 with juice/95 PSI of air because juice is thicker than water, can produce higher/greater differences in spikes of pressure in the nozzle and needs more volume and/or pressure to push it the same distance but the extinguisher can't handle more pressure so you need more volume of propellant instead. Make sure juice is room temp befo...see more »Well, maybe juice hot peppers and use that instead of gasoline. You wouldn't even need to ignite it to get "fire" out of it. Good for self defense, annoying neighbors or taco salad. Don't forget to use vinegar instead of water, use the hottest peppers possible, boil the juice for maximum potency and strain the pulp out well so the juice isn't so thick it jams the extinguisher. Repeat the process until you have enough to fill the extinguisher 1/2 with juice/95 PSI of air because juice is thicker than water, can produce higher/greater differences in spikes of pressure in the nozzle and needs more volume and/or pressure to push it the same distance but the extinguisher can't handle more pressure so you need more volume of propellant instead. Make sure juice is room temp before you add it to the extinguisher and compress or you you'll get too much pressure in the extinguisher when hot, too little pressure in the extinguisher when cool and weakening of material caused by extreme temp changes. The acid in the vinegar and peppers may weaken the container over time if it's not resistant to rust, so empty, hose out and check the container every few months. a bucket can be used to spray the juice into so you don't waste it. You can use the juice in spray bottles and squirt guns even if the extinguisher becomes rusty inside. Beware of ricocheting juice when emptying it into bucket. Be warned, you'll want a gas or dust mask, goggles, HDPE, rubber or latex gloves, open windows and an equal and opposing # of fans blowing air outside as the fans blowing inside or extreme tolerance built up to hot peppers, food and steam from potent acids if you intend to boil the concoction down to a thick but strainable liquid for maximum potency.